Please use this identifier to cite or link to this item: http://gukir.inflibnet.ac.in:8080/jspui/handle/123456789/4205
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dc.contributor.authorMahendra Raj K
dc.contributor.authorVivekanand B
dc.contributor.authorNagesh G.Y
dc.contributor.authorMruthyunjayaswamy B.H.M.
dc.date.accessioned2020-06-12T15:02:39Z-
dc.date.available2020-06-12T15:02:39Z-
dc.date.issued2014
dc.identifier.citationJournal of Molecular Structure , Vol. 1059 , 1 , p. 280 - 293en_US
dc.identifier.uri10.1016/j.molstruc.2013.12.010
dc.identifier.urihttp://gukir.inflibnet.ac.in:8080/jspui/handle/123456789/4205-
dc.description.abstractA series of new binucleating Cu(II), Co(II), Ni(II) and Zn(II) complexes of bicompartmental ligands with ONO donor were synthesized. The ligands were obtained by the condensation of 3-chloro-6-substituted benzo[b]thiophene-2- carbohydrazides and 4,6-diacetylresorcinol. The synthesized ligands and their complexes were characterized by elemental analysis and various spectroscopic techniques. Elemental analysis, IR, 1H NMR, ESI-mass, UV-Visible, TG-DTA, magnetic measurements, molar conductance and powder-XRD data has been used to elucidate their structures. The bonding sites are the oxygen atom of amide carbonyl, azomethine nitrogen and phenolic oxygen for ligands 1 and 2. The binuclear nature of the complexes was confirmed by ESR spectral data. TG-DTA studies for some complexes showed the presence of coordinated water molecules and the final product is the metal oxide. All the complexes were investigated for their electrochemical activity, only the Cu(II) complexes showed the redox property. Cu(II) complexes were square planar, whereas Co(II), Ni(II) and Zn(II) complexes were octahedral. Powder-XRD pattern have been studied in order to test the degree of crystallinity of the complexes and unit cell calculations were made. In order to evaluate the effect of antimicrobial activity of metal ions upon chelation, both the ligands and their metal complexes were screened for their antibacterial and antifungal activities by minimum inhibitory concentration (MIC) method. The results showed that the metal complexes were found to be more active than free ligands. The DNA cleaving capacities of all the complexes were analyzed by agarose gel electrophoresis method against supercoiled plasmid DNA. Among the compounds tested for antioxidant capacity, ligand 1 displayed excellent activity than its metal complexes. © 2013 Elsevier B.V. All rights reserved.en_US
dc.subjectBenzo[b]thiophene
dc.subjectBinuclear complexes
dc.subjectElectrochemistry
dc.subjectESR
dc.subjectTG-DTA
dc.titleSynthesis, spectroscopic characterization, electrochemistry and biological evaluation of some binuclear transition metal complexes of bicompartmental ONO donor ligands containing benzo[b]thiophene moietyen_US
dc.typeArticle
Appears in Collections:1. Journal Articles

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